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Calculate Calendar.ISO.quarter_of_year/3 with bitwise arithmetic #15945

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Calculate Calendar.ISO.quarter_of_year/3 with bitwise arithmetic #15945

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2 changes: 1 addition & 1 deletion lib/elixir/lib/calendar/iso.ex
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Original file line number Diff line number Diff line change
Expand Up @@ -1198,7 +1198,7 @@ defmodule Calendar.ISO do
@impl true
def quarter_of_year(year, month, day)
when is_year(year) and is_month(month) and is_day(day) do
div(month - 1, 3) + 1
(month * 5 + 14) >>> 4
end

@doc """
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